JPH07233620A - Floor structure - Google Patents

Abstract

PURPOSE:To secure the quality of a floor surface and improve the construction efficiency, surface rigidity, and sound insulation property. CONSTITUTION:Multiple ALC panels 4-7 are spread and arranged on a girder 2 and a beam 3 constituting a building frame, and a self-leveling material adjusted for a high viscosity is filled at the bottom sections of joints 9 formed around the ALC panels 4-7 for sealing. Before the filled self-leveling material is hardened, the self-leveling material of the same kind is filled in the joints 9, it is spread in the whole upper area of the ALC panels 4-7 to integrally form the joints 9 and a floor surface 10, the ALC panels 4-7 are integrated together, and the ALC panels 4-7 and the girder 2 and the beam 3 are integrated.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a floor structure in which a cement floor panel such as an ALC panel is attached to a frame to form a floor surface.

[0002]

2. Description of the Related Art In a recent building, AL is used for the frame of steel structure.
The floor surface is often constructed by attaching a plurality of panels such as C-panels such as cement floor panels. In order to increase the surface rigidity of the floor surface, between the panels attached to the body,
And each panel is integrated with the body.

An example of a conventional floor structure will be schematically described with reference to FIG. Grooves 51a to 53a are preliminarily formed over the entire length on the side surfaces in the longitudinal direction of the panels 51 to 53, a part of which is shown in the figure. The frame is provided with a plurality of beams 54 at intervals according to the dimensions of the panels 51 to 53 in the longitudinal direction. Both ends of each panel 51 to 53 in the longitudinal direction are placed on and supported by the beam 54. .

A plurality of slab plates 55 are attached to the upper surface of the beam 54 by welding at a pitch corresponding to the width dimension of the panels 51 to 53. Further, a joint rebar 56 is inserted through the hole formed in the slab plate 55, and the rebar 56 is arranged at a joint constituted by the grooves 51a and 52a of the panels 51 and 52 arranged in the width direction.

A joint mortar 57, which is prepared on site, is filled in the joint in which the joint rebar 56 is arranged and in the joint formed between the panels 51 and 53 arranged in series in the longitudinal direction. The panels 51 to 53 are integrated with each other, and the panels 51 to 53 and the body are integrated. Also, each panel 51-53 and cement mortar 57 filled in the joint 57
A finishing mortar 58 is formed on the upper surface of the, and the mortar 58 constitutes a floor surface.

Further, Japanese Laid-Open Patent Publication No. 54-45921 discloses a technique relating to a method for constructing a floor plate of an ALC panel. This technique arranges ALC panels vertically and horizontally adjacent to each other on a beam to form vertical grooves along the long sides of the panels, and forms joints between vertically adjacent panels on the bottom surface of the grooves. After filling the cement mortar with the interposition of muscles and solidifying,
Alternatively, the present invention relates to a construction method in which gypsum slurry is filled with rustproof joints between adjacent panels and at the same time the panel surface layer is covered with the gypsum slurry. With this technology, the surface layer of the floor can be finished smooth, and the construction period can be shortened by easy construction.

[0007]

However, in the above-mentioned conventional floor structure, since the cement mortar for integrating the panels and the panel and the frame is dependent on the on-site mixing by the operator, the panel mounting strength is There is a problem that it is easily affected by skill. This problem is caused by fluctuations in adhesive strength due to variations in construction quality and variations in drying and shrinkage of cement mortar, which reduces surface rigidity and causes cracks and peeling of the finishing material due to increased panel bending. May be derived.

Usually, after a considerable amount of time has passed after mounting the panel and filling the cement mortar into the joints,
Construction of finishing mortar is carried out. That is, there is a problem that the process of filling the cement mortar to the joint and the process of applying the finishing mortar are double processes, and the process is complicated and takes time, and the cement mortar filled in the joint before the finishing mortar is dusty, etc. However, there is a problem in that the adhesion to the cement mortar filled in the joints is reduced.

Furthermore, depending on the skill of the plasterer, rich mixing of finish mortar and thick coating may be performed, resulting in peeling or damage of the panel due to shrinkage or cracking of the finish mortar. is there.

Further, in the technique disclosed in JP-A-54-45921, when the joint surface is filled with cement mortar and the surface layer of the panel is covered with gypsum slurry, the mortar filled in the joint is solidified. The problem is that there is a limit to the shortening of the construction period because it requires a period up to, and it is difficult to fill the joint part of the mortar, it is easy to form voids in the joint and the plaster is weak to water, and the floor waterproofness is poor. There are various problems such as the problem that mortar and gypsum are different materials and the boundary between the two is weak against impact, and that the gypsum and floor panel are different materials and the mutual adhesion performance is poor.

Further, when the joint surface is filled with the gypsum slurry and the panel surface layer portion is covered with the gypsum slurry at the same time, it is indispensable that the reinforcing bars arranged in the joint portion be subjected to anticorrosion treatment. Therefore, there are problems that the waterproof performance of the floor is inferior, and that the plaster and the floor panel are made of different materials and the mutual adhesion performance is inferior.

[0012] The gypsum-based self-leveling material cannot be used on the ground floor or in a place wet with water because of the low water resistance of the main gypsum, and there is a problem that the range of application is naturally limited.

In particular, gypsum-based self-leveling materials are neutral or weakly acidic and tend to rust iron. Therefore, when the gypsum-based self-leveling material is used, it is necessary to perform rust-prevention treatment on the reinforcing bars and metal parts, which causes a problem of cost increase.

It is an object of the present invention to provide a floor structure capable of ensuring the quality of the floor surface and improving the surface rigidity and sound insulation.

[0015]

In order to solve the above problems, the floor structure according to the present invention is a floor structure in which a plurality of cement-based floor panels are arranged and attached to a frame, and the floor structure is formed around the floor panel. The joint is filled with a cementitious self-leveling material, and the cementitious self-leveling material of the same kind is poured on the floor panel to form a floor surface, and the joint is integrated with the floor surface.

In the above floor structure, the floor panel is preferably made of lightweight cellular concrete.

Further, in the above floor structure, it is preferable that the joint is filled with a cementitious self-leveling material after the bottom of the joint is leak-proofed.

Further, in the above floor structure, the viscosity of the cement self-leveling material is adjusted to a high level so that it is filled in at least the bottom of the joint as a leak preventive material, and before the cement self-leveling material is hardened, a new cement-based self-leveling material is added. It is preferable that the joint and the floor surface are integrated by filling the joint with the self-leveling material and flowing it on the floor panel.

[0019]

[Operation] In the above floor structure, the cement floor panel (hereinafter,
Cement-based self-leveling material (hereinafter referred to as "self-leveling material") on joints formed around the "panel"
It is possible to integrate the self-leveling material filled in the joint and the self-leveling material poured on the floor with the panel by flowing the same kind of self-leveling material on the upper surface of the panel.

The self-leveling material has a quality defined in JASS15 M-103 "Architectural Society of Japan Quality Standards for Self-Leveling Material", and is supplied in a state where various components are preliminarily prepared. Therefore, regardless of the experience of the worker, it is possible to uniformly prepare and perform the construction on site.

It has a high viscosity and preferably has a flow value of 5 cm.
By filling the joint with the self-leveling material adjusted to be less than 19 cm, it is possible to cause the self-leveling material to function as a leak preventive material, before the filled self-leveling material is cured, that is, self-leveling. By filling the joint with new self-leveling material and flowing it on the panel before solidification of the material begins (within 1 hour),
The joint can be integrated with the floor and panel to increase the rigidity of the floor.

In particular, when a lightweight cellular concrete such as ALC is used as the floor panel, it is not clear whether it is due to the surface condition of the panel or due to bubbles, but the self-leveling floor cast on the panel. It is preferable because it has excellent adhesion to the surface.

[0023]

EXAMPLES Examples of the floor structure will be described below with reference to the drawings. FIG. 1 is a view showing a part of a floor surface in a state in which an ALC panel is laid on a skeleton, and FIG. 2 is a cross-sectional view taken along line II-II in FIG. 1 after a floor surface is constructed with a self-leveling material. FIG. 3 is a sectional view taken along the line III-III in FIG. 1 after the floor surface is constructed with the self-leveling material.

As shown in FIG. 1, a plurality of pillars 1 are arranged in a predetermined position on the frame, and two to four large beams 2 are connected to the pillar 1 depending on the position of the pillar 1 in the frame. Has been done.
In addition, a plurality of small beams 3 are arranged in parallel to the large beam 2 in one direction,
It is connected to another girder (not shown) arranged in the direction orthogonal to the girder 2 with a distance equal to the length of the ALC panel 4 which is a cement floor panel.

Both ends in the longitudinal direction of the ALC panel 4 are placed and supported by the large beams 2 and the small beams 3. In the panel laying method shown in FIG. 1, avoiding members (not shown) for avoiding protrusions such as connecting plates and bolts and nuts in the joint portion between the pillar 1 and the girder 2 are attached to the joint portion, On the avoidance member, a width equal to the width of the pillar 1 and A
A panel 5 having a length equal to the width dimension of the LC panel 4 and thinner than the thickness of the ALC panel 4 is arranged according to the height dimension of the avoiding member. Therefore, the ALC panel 6 arranged in parallel with the ALC panel 4 at the arrangement position of the ALC panel 5 has a shorter length than the ALC panel 4. An ALC panel 7 having a width equal to the width dimension of the pillar 1 and a thickness equal to that of the ALC panel 4 is disposed on the other girders arranged in the direction orthogonal to the girder 2.

In this embodiment, the ALCs corresponding to the corners of the ALC panels 4 and 6 placed on the girders 2 and the girders 3 are used.
Mounting brackets 8 are provided to define the mounting positions of the panels 4 and 6 with respect to the frame and to integrate them. The mounting bracket 8 forms an engaging portion that engages with the girders 2 and the girders 3 and is in contact with the side surfaces of the ALC panels 4 and 6 to define a mounting position, and the ALC panels 4 and 6. A regulation piece 8 that faces the end face in the longitudinal direction and regulates the mounting position.
b, and a floating prevention piece 8c for preventing the ALC panels 4 and 6 from floating.

Grooves (4a, 6a) are formed on the upper surfaces of the side surfaces of the ALC panels 4 to 7 in the longitudinal direction.
Therefore, as shown in FIG. 3, joints 9 formed by the grooves 4a and 6a are formed between the two ALC panels 4 and 6 arranged in parallel. Similarly, joints 9 are formed between adjacent ALC panels 4 or between ALC panels 4 and ALC panels 5 and 7.

The ALC panels 4 to 7 are arranged in series via the girder 2 or the girder 2 and the girder 3. For this reason,
As shown in FIG. 2, each ALC panel 4 to 7 is constituted by the end faces in the longitudinal direction and the upper face of the girder 2 or the girder 3,
A joint 9 having a depth equal to the thickness of the ALC panel 4
Is formed. Therefore, the joints 9 having different shapes are formed around the ALC panels 4 to 7.

However, the joint 9 is not constituted by a continuous surface, but is formed by the grooves of the ALC panels 4-7 or the end surfaces of the ALC panels 4-7 and the upper surfaces of the beams 2, 3. Therefore, the joint 9 has a connection surface that cannot be guaranteed to be in close contact. Further, the self-leveling material has extremely high fluidity, and there is a risk that it will penetrate into a slight gap. Therefore, if there is a connection surface with a gap in the joint 9, there is a problem that the filled self-leveling material leaks through the connection surface.

Therefore, in the present embodiment, A is applied to all the floor surfaces.
After laying LC panels 4-7, after applying a primer for securing the adhesive force with the self-leveling material on the surfaces of ALC panels 4-7, and further performing a leak-proof construction on the bottom of the joint 9. At the same time as filling the joint 9 with the self-leveling material, the self-leveling material is made to flow over the entire upper surfaces of the ALC panels 4 to 7 to form a floor surface.

A connection surface with a gap is formed at the bottom 11 of the joint 9. By filling the bottom 11 of the joint 9 with a self-leveling material that is of the same quality as the self-leveling material that flows on the floor and has a viscosity value adjusted to a high flow value of about 10 cm, a flow value of 19 cm or more newly poured on the joint 9 and the upper surface of the panel. It is possible to prevent the self-leveling material from leaking under the panel. Also, not only the bottom 11 of the joint 9 but also the joint 9
It is also possible to fill the whole of. The filling amount can be selected according to the shape of the joint 9.

Here, as a method of filling the joint 9 with the self-leveling material whose viscosity is adjusted to be high, for example, a pump, a scoop, a trowel or the like having a thin nozzle tip used for constructing mortar in a narrow space is used. There is a method to use.

After carrying out the leak-proof construction for the joint 9,
Before the self-leveling material whose viscosity is adjusted to harden (about 30 minutes), pour the self-leveling material with a flow value of 19 cm or more onto the joints and the upper surfaces of the ALC panels 4 to 7 and perform curing for a predetermined period. A floor surface 10 (finishing surface 10) in which the self-leveling material filled in the joint 9 and the self-leveling material on the ALC panel are integrated is formed.

In the floor structure described above, the fittings 8 attached to the girders 2 and girders 3 are embedded in the self-leveling material. Therefore, the ALC panels 4 and 6 are integrated with each other by the self-leveling material, and also integrated with the body through the self-leveling material filled in the joint 9 and the mounting metal fitting 8.

In this embodiment, as a leak-proof construction, mortar having the same quality as the self-leveling material and high viscosity was filled in the bottom portion 11 of the joint 9, but the invention is not limited to this method, and it is not limited to this method. As long as it is possible to close the gap between the formed connection surfaces, packing may be interposed in another method, for example, the connection surface between the panels or the connection surface between the panels and the upper surface of the beam.

Further, in this embodiment, A adjacent to each other in the width direction is used.
By arranging the fittings 8 at the corners of the LC panels 4 and 6, the ALC panel 4 can be provided without arranging joint rebars in the joints 9 formed by the grooves 4a and 6a of the ALC panels 4 and 6. , 6 and ALC panel 4,6
And the skeleton are integrated. However, the present invention is not limited to this configuration, and the joint reinforcing bars may be arranged as in the conventional case to integrate the panels and the panel and the frame.

[0037]

As described above in detail, in the floor structure according to the present invention, the joints formed around the cement floor panel are filled with the self-leveling material, and the same type of self-sticking material is provided on the upper surface of the cement floor panel. Since the joint and the floor surface are integrated by flowing the leveling material, it is possible to reduce the number of construction days and the construction labor.

Since the self-leveling material to be filled in the joint and the self-leveling material to flow on the panel are the same,
Both can be completely integrated to increase the rigidity of the floor.

Further, the cement-based self-leveling material is alkaline and does not require anticorrosion treatment of the reinforcing bars and metal fittings provided on the joints. Therefore, the cost does not increase.

The cement-based self-leveling material has excellent water resistance after curing, and can be applied to a ground floor or a place wet with water.

Since the cement-based floor panel is cement-based, the adhesiveness of the self-leveling material to the panel is large, and stable strength against impact or the like can be exhibited.

Further, since the joint filling and the finishing are carried out by using the self-leveling material in which the components are adjusted in advance, the variation due to the difference in the skill of the workers is eliminated and the quality is made uniform and the finishing is smooth. It is possible to secure the sex. In addition, the joint and the finished surface are integrated, and the surface rigidity can be improved and the sound insulation can be improved without causing an obstacle such as a crack on the finished surface.

Further, after the leak-proof construction is applied to the bottom of the joint, by filling the joint with the self-leveling material, even the self-leveling material having a low viscosity can be stably applied without leaking from the joint. .

Also, by using a lightweight cellular concrete such as ALC as the floor panel, the adhesion between the panel and the self-leveling floor surface cast on the panel is excellent, so that both are firmly integrated. It has features such as being able to.

[Brief description of drawings]

FIG. 1 is a diagram showing a part of a floor surface in a state where an ALC panel is laid on a body.

FIG. 2 is a cross-sectional view taken along line II-II in FIG. 1 after the floor surface is constructed with the self-leveling material.

FIG. 3 is a sectional view taken along line III-III in FIG. 1 after the floor surface is constructed with the self-leveling material.

FIG. 4 is a cross-sectional view showing a conventional panel mounting structure.

[Explanation of symbols]

 1 Pillar 2 Large beam 3 Small beam 4-7 ALC panel 8 Mounting bracket 8a Mounting piece 8b Specified piece 8c Floating prevention piece 9 Joint 10 Floor, Finish 11 Bottom of joint

Claims (4)

[Claims] 1. In a floor structure in which a plurality of cement-based floor panels are arranged and attached to a skeleton, joints formed around the floor panels are filled with cement-based self-leveling material, and the same type is applied on the floor panels. A floor structure characterized in that the cement-based self-leveling material is used as a floor surface to integrate the joints and the floor surface. 2. The floor structure according to claim 1, wherein the floor panel is made of lightweight cellular concrete. 3. The floor structure according to claim 1 or 2, wherein the joint is filled with a cement self-leveling material after the bottom of the joint is leak-proofed. 4. The viscosity of the cementitious self-leveling material is adjusted to a high level to fill it as a leak preventive material at least at the bottom of the joint, and before hardening of the cementitious self-leveling material,
The floor structure according to claim 1 or 2, wherein a new cement-based self-leveling material is filled in the joints and allowed to flow over the floor panel.